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Finding the Fourth Proportional to 88,191.56, 121,714.98 and 50,465

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Solution

The fourth proportional to 88,191.56, 121,714.98 and 50,465 is: 69,647.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,191.56 : 121,714.98 = 50,465 : x
  2. Step 2: Convert to fraction form
    88,191.56/121,714.98 = 50,465/x
  3. Step 3: Cross multiply
    88,191.56x = 121,714.98 × 50,465
  4. Step 4: Simplify right side
    88,191.56x = 6,142,346,465.70
  5. Step 5: Solve for x
    x = 6,142,346,465.70/88,191.56
  6. Step 6: Final answer
    x = 69,647.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.